Alya Sometimes Hides Her Feelings in Russian, Vol. 4

As summer vacation begins, Masachika and Alya find themselves spending time together, but their focus shifts to studying at Masachika's home. Determined to teach him how to treat a woman, Alya and Masachika engage in a playful battle of wills. Their summer adventures escalate with a student council trip to the beach, filled with swimsuits, hot springs, and exciting games, leading to unexpected revelations as secrets threaten to surface.